32results about How to "Zoom in displacement" patented technology

The invention relates to a pendulum type friction wall. The friction wall is used for energy dissipation of house buildings. The pendulum type friction wall comprises upper and lower beams, a pair of connection plates, a friction pendulum, a pair of lightweight walls, a hinge axis, a chute and split bolts. The friction wall has the following beneficial effects: the friction wall can be installed in the structure as a segmentation element with building functions and does not bear vertical load; under the action of wind load or seismic load, the energy input by the wind load or seismic load is dissipated by friction generated when the friction pendulum swings, thus protecting the main members of the structure; and the friction force can be increased through leverage of a swing arm, and lower pressure can be maintained on the friction surface, thus reducing abrasion of the friction pair.

The invention relates to an energy dissipation supporting system capable of magnifying displacement of a damper. The energy dissipation supporting system comprises a steel support, a supporting pivot,and a swinging arm; the steel support and the swinging arm are connected into a whole through the supporting pivot, the swinging arm is centered on the supporting pivot and can swing in the plane where the steel support is located, one end of the swinging arm is connected with a frame beam, and the other end of the swinging arm is connected with the damper; the damper is placed horizontally, andthe other end of the damper is firmly connected with the bottom end of the steel support. The two ends of the swinging arm are confined to move only on the plane of the steel support, floor displacement is first transmitted to one end of the swinging arm which is connected to frame beamto make the frame beam to generate horizontal movement around the supporting pivot, thus the other end of the swinging arm is driven to also generate horizontal movement around the supporting pivot, by using the length difference between the two ends of the swinging arm and the supporting pivot, displacement atthe other end of the swinging arm is magnified, and meanwhile, displacement of the damper connected to the swinging arm is magnified. According to the energy dissipation supporting system capable of magnifying displacement of the damper, the use range of the damper is greatly expanded, and supporting and arrangement are very flexible.

The invention discloses a rotary extrusion type magnetorheological damper. The damper comprises a damper body, and a main shaft stretch-out end, driving a disk to make linear extrusion movement along the axis, in the damper body is connected with a displacement shifting assembly. The displacement shifting assembly comprises a support fixed to the damper body, a supporting base is fixed to the support, one end of a lead screw penetrating into the supporting base is movably connected with a ball nut installed on a movable block, the movable block is fixedly connected with the main shaft stretch-out end, and the other end of the lead screw is connected with a connecting rod set making rotating movement. According to the rotary extrusion type magnetorheological damper, damping force is reduced in a displacement amplification mode, the adjusting range of the damping force is not invariable any more, and flexible adjustment can be performed according to the requirement of an excitation source. Besides, the rotary extrusion type magnetorheological damper has the advantages that the using amount of magnetorheological fluid is small, and sedimentation blocking is not likely to happen.

The invention discloses a micro-drive system and a clamping system comprising the micro-drive system. The micro-drive system is based on a shape memory effect and is driven by two shape memory alloy rods which are mutually perpendicular, a first shape memory alloy rod is electrified and contracts to push a drive piston to move forwards through a transmission rod assembly, a second shape memory alloy rod is electrified and contracts to drive the drive piston to reset, and at the same time, the two shape memory alloy rods can respectively serve as a drawing power source of each other to produce plastic deformation. The clamping system comprises the micro-drive system and an internal reflux area differential stroke amplifying device, due to the fact that a reflux hole is formed in an output piston, the differential effect is achieved, the effective acting area of the output piston is made to be only the cross sectional area of a piston rod, and therefore the amplification coefficient is improved on the basis of reduction of the size of the stroke amplifying device. Compared with a traditional drive clamping device, the clamping system is small in size, simple in structure, good in controllability, fewer in energy conversion steps, high in utilization rate of energy, free of pollution, and capable of protecting environment.

The invention provides a quicksand type rotating viscous damper. Inter-floor relative displacement generated under the earthquake action is input through a displacement speed input device, the relative displacement and the speed are transmitted to a viscous damper body through a gear transmission amplifying device, rotating blades in the viscous damper body are arranged in a damper cavity, the damper cavity is connected with a rotating shaft through a bearing, the rotating blade and a transmission small gear coaxially rotate on the rotating shaft, the radius of the rotating blade is larger than that of the transmission small gear, circulation holes are distributed in the edge of the rotating blade, an input gear in the displacement speed input device is engaged with the transmission smallgear in a gear set, a damper connecting part in the gear transmission amplifying device is composed of the transmission small gear and the rotating shaft, the transmission small gear is engaged with the gear assembly and is fixed to the rotating shaft, the gear transmission principle can be used, linear displacement and linear speed of the edge of the rotating blade are amplified, energy consumption is increased, and the better vibration reduction effect is achieved

The invention discloses a damping device of an unmanned aerial vehicle hybrid power unit in the technical field of unmanned aerial vehicle equipment. The device comprises a loading platform, a hybridpower unit of the unmanned aerial vehicle is arranged on the loading platform, a first damping mechanism is arranged between the hybrid power unit and the loading platform, and a second damping mechanism is arranged between the loading platform and a vehicle body; the second damping mechanism comprises a passive damping assembly and a magnetic damping assembly; the first damping mechanism comprises a voice coil motor; a motor shaft of the voice coil motor is connected with a first bearing seat through a coupler, a first self-aligning bearing is arranged in the first bearing seat, a second bearing seat is arranged at the bottom of the hybrid power unit, a second self-aligning bearing is arranged in the second bearing seat, and a transversely-arranged supporting rod is installed between thefirst self-aligning bearing and the second self-aligning bearing. A supporting part for supporting the supporting rod is arranged at the lower end of the supporting rod and is close to the first self-aligning bearing. The device has the advantages of being compact in structural design and remarkable in damping effects.

The invention discloses a multi-degree-of-freedom piezoelectric actuator based on piezoelectric stacks as well as a working method and relates to the technical field of piezoelectric actuators. The multi-degree-of-freedom piezoelectric actuator can realize a rotation motion of three degrees of freedom on the basis of a single stator and is simple and compact in structure. The multi-degree-of-freedom piezoelectric actuator comprises a stator, piezoelectric stacks and a spherical rotor, wherein the interior of the stator is hollow, and the top of the stator is tightly connected with the spherical rotor; four piezoelectric stacks are arranged in total, a polarization direction is upward in the vertical direction, the piezoelectric stacks are placed in the inner cavity of the stator side by side and in pairs, thus a piezoelectric stack square matrix is formed, and the piezoelectric stack square matrix is tightly connected with the stator; and the symmetry center of the piezoelectric stacksquare matrix is coincided with a projection, in the vertical direction, of the center of the spherical rotor. The multi-degree-of-freedom piezoelectric actuator disclosed by the invention can be usedfor replacing a multi-degree-of-freedom piezoelectric actuator scheme with a more complex structure and a larger size in an existing scheme and has a broad application prospect in the high-precisionfields of micromachines, optical instruments, aerospace, medicine and the like.

The embodiment of the invention provides a bionic food processing device and relates to the technical field of food processing. The device comprises: a frame; a driving assembly, wherein the driving assembly is arranged on the frame and the driving assembly comprises a driving shaft; a clutch assembly, wherein the clutch assembly comprises a first part and a second part which can be mutually clutched, and the driving shaft is connected to the first part; a traction assembly, wherein the traction assembly comprises a rotary traction piece and a connecting rope, the rotary traction piece is provided with a first connecting part and a second connecting part, the first connecting part is rotatably arranged on the second part, the frame or the driving shaft, and the connecting rope is connected to the second connecting part; and a hammer body, wherein the hammer body is connected to the connecting rope. The device of the invention can improve the hammering effect on food raw materials, simultaneously avoids that the hammer body is over-guided and can only move on a single path, enlarges the falling point range of the hammer body, and obtains a bionic effect of imitating artificial hammering.

The invention provides a monitoring device based on Beidou satellite positioning, which comprises a moving station. The moving station comprises a monitoring probe, a transmission system and a displacement mechanism. The monitoring probe is connected with the transmission system through a first pull rope, and the displacement monitored by the monitoring probe is amplified through the transmissionsystem. The displacement mechanism comprises a Beidou signal emitter, and the transmission system is connected with the displacement mechanism, so that the Beidou signal emitter moves according to theamplified displacement. The transmission system comprises a first transmission wheel and a second transmission wheel which move synchronously, and the diameter of the first transmission wheel is larger than that of the second transmission wheel. The first pull rope is connected with the monitoring probe and the second transmission wheel, and the first transmission wheel is connected with the displacement mechanism through a second pull rope. Through cooperation of the first transmission wheel and the second transmission wheel, the displacement monitored by the monitoring probe can be amplified, tiny displacement changes of a slope can be fed back, and early warning can be conducted in time through the Beidou signal emitter.

The invention discloses an integrated valve piezoelectric pump based on a rhombus amplification mechanism. The integrated valve piezoelectric pump is composed of a pump body, a piezoelectric stack, screws, an end cover and a rhombus integrated valve, wherein a liquid inlet plug, a right liquid outlet plug, a left liquid outlet plug and the rhombus integrated valve on the rhombus integrated valve are of an integrated structure, the right liquid outlet plug and the left liquid outlet plug leave a right outflow port and a left outflow port when the liquid inlet plug is ejected into an inflow port, the right liquid outlet plug and the left liquid outlet plug are ejected into the right outflow port and the left outflow port when the liquid inlet plug leaves the inflow port, and used for blocking fluid or enabling the fluid to communicate, the similar-valve effect is achieved, and the lower wall and an upper arm of the rhombic integrated valve do planar motion in a pump cavity along with therhombic integrated valve, so that the volume of the pump cavity formed by the pump body and the end cover is changed, pressure difference is formed in the pump cavity, and the liquid is sucked in ordischarged out.

The invention discloses an inertia pump with a three-piezoelectric-stack rhombus amplification structure. The inertia pump is composed of a flow pipe, a wheel type one-way valve, an umbrella type one-way valve, a cantilever beam, a cantilever beam screw, a cantilever beam mass block, a pump body, the rhombus amplification structure, a small stack cover, a small stack cover screw, a large stack cover, a large stack cover screw, small piezoelectric stacks and a large piezoelectric stack, wherein the included angle between an upper arm and a lower arm of the rhombic amplification structure is 60degrees, so that the best effect of transmitting the the rhombic amplification structure and amplifying the movement and displacement of the small piezoelectric stacks and the large piezoelectric stack is achieved, the driving part is provided with three stacks, namely two small piezoelectric stacks and one large piezoelectric stack which are connected to two independent power supplies with opposite phases, so that the small piezoelectric stacks and the large piezoelectric stack move in opposite directions, the flow pipe is provided with a one-way valve installation base, and the wheel type one-way valve and an umbrella type one-way valve and the umbrella type one-way valve can be selected and arranged on the one-way valve installation base and used for reversely stopping liquid backflow.

The invention discloses a damping device for a bridge suspender damping cable, which comprises a main beam, a bridge tower, a main cable and damping cable devices, the main cable is located above the main beam, the left end and the right end of the main cable are installed on the bridge tower on the two sides of the main beam, a plurality of suspender sets are arranged between the main cable and the main beam, and each suspender set comprises two suspenders which are parallel to each other and vertically arranged. The damping cable devices are symmetrically installed along the suspension bridge cross-section breaking surface and connected between the upper portion of a suspension bridge tower and a suspender, and the damping cable devices comprise a transverse damping cable device and a longitudinal damping cable device. Every two transverse main and auxiliary cables and two longitudinal main and auxiliary cables form a standard vibration reduction section, vibration of the four adjacent suspenders in any direction is restrained at the same time, and vibration of the suspenders of the full bridge is restrained by sequentially connecting the vibration reduction sections.